Famously Google has had only a single rear camera on every Pixel model large and small. The company embraced using AI and machine learning to create photos that rival phones with two rear cameras like the iPhone XS or three back cameras like the Huawei P20 Pro. A second camera could be used for something other than photography like perhaps AR.

The drawings of the unreleased 4 XL also show an oval hole-punch display for two selfie cameras like on the new Galaxy S10 Plus. Famously, the Pixel 3 lacks a notch while the Pixel 3 XL has one of the largest found on any phone.

Curious enough the drawing doesn't show a fingerprint reader on the back. This omission could indicate that the next Pixel phone will have an in-screen fingerprint reader like the OnePlus 6T and Galaxy S10.

Of course, the drawing hasn't been verified so it should be taken with a grain of salt. That said, it's still fun to think about.